RTA tyre inspection rules: what will cause a fail?

Inspection rules can be updated. Treat this as a practical pre-test list, then confirm at your testing centre if you are unsure. Official testing covers axles, wheels, tyres, and suspension — not a tyre shop quote.

What inspectors look at

For tyres, centres typically check:

• Tread depth on the fitted road tyres
• Visible damage on the sidewall, shoulder, and tread
• Correct size versus the vehicle
• Matching construction on the same axle (almost always radial)
• Signs of ageing in UAE heat

The spare is often not the main fail item, but a damaged wheel or a loose spare mount can still be flagged.

Fail list: most common tyre reasons

• Tread at or below 1.6 mm — Legal minimum commonly enforced in the UAE. Check all four tyres, not just the fronts.
• Uneven wear — Inner or outer shoulder worn flat from alignment, kerbs, or low pressure.
• Sidewall damage — Cuts, cracks, bubbles, bulges, or exposed cords — a fast fail in Dubai heat.
• Wrong or mixed sizes — Size must match the car. Different sizes on the same axle can fail.
• Heat-aged rubber — Dry rot or a very old DOT date, even with tread left.

1. Tread at or below 1.6 mm

The UAE minimum commonly enforced is 1.6 mm across the central tread. If the wear-indicator bars in the grooves are level with the rubber, the tyre is done.

Home check: press a 1-dirham coin into a main groove. If the coin rim is fully visible, you are close to the limit — replace before the test, not after a fail report.

2. Uneven wear

Inner or outer shoulders worn flat (alignment, kerb hits, under-inflation) can fail even if the centre of the tyre still has tread. Dubai roads and tight parking make this common. Fix alignment when you replace the pair on that axle.

3. Sidewall damage

Cuts, cracks, bubbles, bulges, or exposed cords are a fast fail. In Gulf heat a damaged sidewall is a blowout risk, so inspectors treat it as a safety item, not cosmetics.

4. Wrong size or mixed sizes

Fit the size on the driver’s door sticker, handbook, or your current approved tyres — for example 205/55 R16. Different sizes on the same axle, or a random plus-size fitted for looks, can fail the test.

5. Mixed construction

All fitted tyres should be the same type. Passenger cars in the UAE are almost always radial. Mixing radial and cross-ply is a fail.

6. Old or heat-aged tyres

Many drivers report fails when rubber is cracked or dry-rotted, even with deep tread. Some centres also look at the DOT date (last four digits: week then year — e.g. 3521 is week 35 of 2021).

A hard “must be under five years” rule is widely claimed online, but it is not always written the same way on official checklists. Do not rely on blogs alone: if the tyre is five or more years old or cracked, replace it before the test.

7. Damaged rims

Bent, cracked, or badly corroded wheels that affect the tyre bead can fail with the tyre item. Check the rim lip after kerb strikes.

10-minute pre-test at home

• Inspect all four road tyres, not just the fronts
• Read the size code and confirm it is approved — see how to read your tyre size
• Read the DOT week-year on the sidewall
• Run a hand around each sidewall for bulges
• Set pressures to the door-sticker PSI with cold tyres

If one tyre is borderline, replace the pair on that axle (or the full set). Mixing a new tyre with a bald one on the same axle is a bad idea for the test and for wet braking.

If you fail

You typically have 30 days and a limited number of re-tests to fix the items on the report. Replace the flagged tyres, keep the receipt, then retest. Do not wait until the pass-certificate window closes if you are also renewing Mulkiya.

Compare replacements before the test

Once you have the size, compare online delivery vs garage fitting so you are not calling workshops one by one the day before Tasjeel.

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